Research the causes of related medical symptoms such as: 1  Eye. 2  Eye symptoms (5412 causes) 3  Eye disease. 4  Eye disorder. 5  Eye problem (5412 causes) 6  Eye pain (475 causes) 7  Itch (1068 causes) 8  more symptoms...Â».
How to read the Histogram. A histogram is a graphical representation of the pixels exposed in your image. The left side of the graph represents the blacks or shadows, the right side represents the highlights or bright areas and the middle section is mid-tones (middle or 18% grey).
How to Actually Read a Histogram. Probably the most used and most talked about graph in any statistics class, a histogram contains a huge amount of information if you can learn how to look for it.hile I can say that most people in this group made less than $50,000 (thatâs where the most frequency is) I canât use this graph to say how many people made EXACTLY $35,000 or how many made EXACTLY $25,000. In a histogram we âloseâ the information about individual data values when we group the data.